DRINKING WATER
GeoTree - First Aqueduct Water Pipeline Rehabilitated With GeoSpray Geopolymer For SDCWA
Critical water tunnels require efficient structural renewal to meet strict shutdown schedules. Certified geopolymer mortar provides a cost-effective, high-strength solution that eliminates groundwater infiltration and improves water quality while ensuring a 70-year service life for essential aqueduct systems.
DRINKING WATER CASE STUDIES AND WHITE PAPERS
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Disinfection Performance Testing Of High-Efficiency Ultraviolet Water Treatment Chamber
This is the second in a series of three white papers describing the design and performance of the NeoTech Aqua ReFlex™ treatment chamber. The first describes in detail the theoretical basis for the very high efficiency demonstrated by the chamber. The third paper describes how this chamber design leads to some highly desirable operational advantages beyond just energy ad cost reduction. By J. R. Cooper, Ph. D. and Gwynne Cavender, NeoTech Aqua Solutions, Inc.
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![hymax-grip-coupling]( "When And Where To Use Piping Restraints")
When And Where To Use Piping RestraintsRead about standards to follow and techniques to apply for restraining pipe connections in specific conditions and environments.
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![Transit-time-clamp-on-variables]( "Choosing A Flow Measurement Technology")
Choosing A Flow Measurement TechnologyFlow, pressure, and temperature are the most important units of measurement when monitoring or controlling fluids in pipes. They are early indicators for problems that can have major implications for the overall business.
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Encore® 700 Chemical Metering Pumps Provide SNWA With A Decade Of Flawless Service At River Mountains
Built in 2002, Southern Nevada Water Authority’s (SNWA) River Mountains Water Treatment Facility is a state-of-the art water treatment facility that delivers 300 million gallons per day and was designed to be expanded to deliver up to 600 million gallons per day of treated water in the future.
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![RentEZ_Program_Enables_Rapid_Repair_of_Water_Storage_Tank_Line-5]( "RentEZ Program Enables Rapid Repair Of Water Storage Tank Line")
RentEZ Program Enables Rapid Repair Of Water Storage Tank LineWater storage tanks are critical to communities because they provide clean water to residents and help meet peak demand. Regular inspections and maintenance ensure that everything works as intended so end users have reliable access to water when it is needed.
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![iStock-1054574144]( "Water Utility OT vs. IT — It's Not A Battle, It's A Balance")
Water Utility OT vs. IT — It's Not A Battle, It's A BalanceThe chemistry of optimizing water/wastewater treatment extends far beyond chlorine and oxygen. It also involves synthesizing productive insights from the flood of IT data generated by operational technology (OT) sensors, instruments, and control systems. Here’s how better operational intelligence strategies are helping IT and OT personnel collaborate to make processes more cost-efficient.
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![image-(3)]( "How Pinnacle's QuadBlock® Technology Sets A New Standard")
How Pinnacle's QuadBlock® Technology Sets A New StandardIn this blog, we will delve into the unique features of QuadBlock® technology and how it sets a new standard in the ozone industry.
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![norwalk-CA]( "AqueoUS Vets® Custom GAC Systems Offer Comprehensive Solution For PFAS And VOC Compound Removal For Golden State Water Company")
AqueoUS Vets® Custom GAC Systems Offer Comprehensive Solution For PFAS And VOC Compound Removal For Golden State Water CompanyServing California for more than 90 years, Golden State Water Company (GSWC) provides water service to more than 1 million customers in over 80 communities, including the City of Norwalk.
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![1395075449-analytical-thinking]( "Water Quality: Why Analytical Thinking Has Never Been More Important")
Water Quality: Why Analytical Thinking Has Never Been More ImportantIn an era of increased scrutiny for delivering efficient and sustainable industrial practices, the maxim “you can’t manage what you don’t measure” is well known to anyone, particularly those whose daily role revolves around monitoring and improving water quality.
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![SustainableConstruction_iStock-504989536]( "Sustainability: It's More Than A Buzzword; It's A Way Of Doing Business")
Sustainability: It's More Than A Buzzword; It's A Way Of Doing BusinessFor water treatment decision-makers already sensitive to issues involving water scarcity, energy consumption, and environmental stewardship, the concept of sustainability is more than just a buzzword. It is becoming a means of survival in response to changing climate impacts, high energy costs, public scrutiny, and limited financial resources. Here is how better awareness, focus, and execution can make sustainability a reality.
DRINKING WATER APPLICATION NOTES
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Water Determination In Liquefied Petroleum Gas Using GC BID And Ionic Liquid Column Watercol™6/28/2018
Water in petrochemical feedstocks can cause problems for processors. Freezing of pipe lines and valves and poisoning of expensive catalysts are just a few examples.
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Industry-Specific Applications For UV Technology6/17/2024
In Microelectronics, Aquafine UV systems provide a synergistic approach towards the reduction of trace organics and microbial contamination for ultrapure water.
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Determination Of Pesticide Residue In Vegetables9/10/2014
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
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Flexible Expansion Joints Provide Protection For Pipelines Subject To Subtle Or Sudden Movement12/7/2020
Flex-Tend flexible expansion joints have a proven record of providing protection for pipelines subject to subtle or sudden movement. As with all products used in the water and wastewater industry, protection is optimized with the selection of the proper assembly incorporated into a sound design. This paper is intended to provide assistance in both of these areas.
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Veterinary Drug Residue Analysis Using The AutoMate-Q40: An Automated Solution To QuEChERS10/1/2014
QuEChERS is a Quick-Easy-Cheap-Effective-Rugged-Safe extraction method that has been developed for the determination of pesticide residues in agricultural commodities.
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Improved Determination Of Volatile Organic Compounds In Water By SPME And GC/MS6/21/2018
The analysis of water for volatile organic compounds is important due to their toxicity. The current methods for this determination lack of sensitivity, selectivity or capability for automation. This paper presents the new ISO 17943 Standard using Solid Phase Microextraction (SPME) and GC/MS. The sample preparation by SPME enables limits of detection and easy automation of the whole method. GC/MS provides the required sensitivity and selectivity. This ISO Standard was validated by an interlaboratory trial, which results confirm the outstanding performance for this method.
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'TOTEX' Is Key When Purchasing Instrumentation4/29/2021
There’s a lot to be considered in the price tag of an ultrasonic instrument. Derek Moore from Siemens explains how the historical way of thinking only of capital costs needs to change to the more holistic approach of total expenditures.
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Municipal Real-Time Water Quality Monitoring9/24/2020
We arm municipalities with actionable data necessary to make informed decisions about water quality in their communities
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Hydrogen Sulfide Removal From Water Using AquaSorb® CX-MCA2/19/2014
The “rotten egg” odor in some water supplies is caused by sulfide in water. Sulfide can be treated using oxidation techniques, the goal being to convert the sulfide to high oxidation state species such as sulfate to eliminate the taste and odor concerns. Traditional oxidation techniques such as ozone and chlorine can be used, but can be expensive due to the equipment required to add and monitor the oxidant, and can lead to by-products such as trihalomethanes (THMs), which are regulated in drinking water supplies.
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Application Note: Low-Flow Sampling Of Water Quality Parameters Used In Determining Groundwater Stability1/20/2010In April 1996, the U.S. EPA developed and published a document entitled Low-Flow (Minimal Drawdown) Ground-Water Sampling Procedures. The document states that “the most common ground water purging and sampling methodology is to purge wells using bailers or high speed pumps to remove 3 to 5 casing volumes followed by sample collection.” Adverse impacts can occur through this method affecting sample quality by increasing levels of turbidity. These problems can often be mitigated by using low-flow purging and sampling to reduce sampling-induced turbidity. By YSI
DRINKING WATER PRODUCTS
The PHOSPHAX sc Phosphate Analyzer is environmentally controlled for rugged, outdoor installations, provides a wide measurement range for a variety of wastewater and drinking water applications (e.g. in the activated sludge basin, for phosphate elimination and my more), and comes with the fully featured "Plug & Play" digital controller.
Smart leak detection with SIWA Leak Finder makes the most of your existing investment in sensors and hydraulic models to take you to the next level of non-revenue water reduction in your drinking water transmission and distribution network. The cloud-based application analyzes your real-time flow data using cloud computing, artificial intelligence, and hydraulic modeling to identify leaks and anomalies. With SIWA Leak Finder you can detect leaks more quickly and accurately so your maintenance teams spend more time in the right location on points of interest that really matter.
Welcome to our award-winning MDM software, Harmony Encore. We took our best-in-class Harmony MDM software and completely reenvisioned every aspect including its design, interoperability, user experience (UX), and speed to bring North American utilities an entirely new solution experience that solves today’s most pressing utility challenges and those of tomorrow.
With a wide variety of parameters to choose from, the MD50 series of single parameter colorimeters pack a lot of features into a rugged, hand-held instrument. Able to perform up to 5,000 tests on a single set of batteries, and housed in an IP67 chemical-resistant casing, it is built to perform in all sorts of field environments. But that's not all - sharing measurement data has never been simpler. Whether you prefer USB-C connectivity or the convenience of wireless technologies the MD50 provides seamless data management when paired with the AquaLX® mobile app.
HYMAX GRIP® joins and restrains a wide selection of pipes of different types and diameters, easily and reliably. Due to its patented design, it allows the joining of pipes of the same or different materials and diameters and preventing axial pipe movement.
Octave brings the latest in ultrasonic metering technology to Commercial/Industrial (C&I) water meters and puts precise measurement where the real flows exist.
LATEST INSIGHTS ON DRINKING WATER
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![wastewater ecological damage-GettyImages-2231956262]( "The Pragmatic Shift In Source Water Protection: Moving From Symptom Management To Root-Cause Accountability")
A shift in how we approach source water protection is long overdue. Currently, we are trapped in a cycle of escalating costs, forced to treat symptoms like algae and invasive weeds expediently with chemicals while the underlying risk in the reservoir compounds. True risk management requires breaking this cycle. -
![River water pollution, Ecological-GettyImages-1215336784]( "The AWWA Said $2.4 Trillion. It Missed The Compound Interest.")
Einstein once said of compound interest, "He who understands it, earns it. He who doesn't, pays it." The same logic of compounding applies to the organic sediment accumulating on the floor of your drinking water reservoir. The longer you wait to address it, the more exponentially expensive it becomes to fix. -
![snowystream-Getty-521971897]( "Winter's Alarmingly Low Snowpack Offers A Glimpse Of The Changing Rhythm Of Water In The Western U.S.")
The April 1 snowpack measurement has long been the single most important number in western water management, considered a strong proxy for how much water the mountains are holding in reserve. But in 2026, that savings account has been woefully deficient. -
![ColoradoRiverDam_Getty-1280300802]( "Why Colorado River Negotiations Stalled, And How They Could Resume With The Possibility Of Agreement")
Why Colorado River Negotiations Stalled, And How They Could Resume With The Possibility Of AgreementThe five most common sources of conflict between people are values, data, relationships, interests, and structure. The current Colorado River negotiations include all five. -
![Water droplets, PFAS, Forever chemical water contamination-GettyImages-2173433890]( "Designing Resilient PFAS Treatment Strategies For Water Agencies")
Water agencies across the U.S. are facing a rapidly evolving regulatory landscape for per- and polyfluoroalkyl substances (PFAS) that poses a conundrum: Should they take a cautious or aggressive approach to treating PFAS contamination in their water system? -
![Oil spill clean up-GettyImages-1369921282]( "The Future Of In Situ Chemical Oxidation For Targeted Solvent Destruction")
The U.S. EPA’s 2026 trichloroethylene (TCE) compliance deadlines are now forcing a concrete shift toward source-zone destruction. In situ chemical oxidation (ISCO), sequenced with enhanced bioremediation, is proving to be the most credible path to groundwater contaminant rebound mitigation.
DRINKING WATER VIDEOS
RIP Kitty Hach-Darrow (October 20, 1922 - June 4, 2020), co-founder of Hach Company
NASA scientists used tree rings to understand past droughts and climate models incorporating soil moisture data to estimate future drought risk in the 21st century.
Get a closer look at how SIWA MDM Analytics Foundation transforms utility data into actionable insight.
Take a quick tour of the Blue-White factory in Huntington Beach, California, where skilled employees are busy building chemical dosing pumps, complete metering systems and flow measurement equipment.
ABOUT DRINKING WATER
In most developed countries, drinking water is regulated to ensure that it meets drinking water quality standards. In the U.S., the Environmental Protection Agency (EPA) administers these standards under the Safe Drinking Water Act (SDWA).
Drinking water considerations can be divided into three core areas of concern:
- Source water for a community’s drinking water supply
- Drinking water treatment of source water
- Distribution of treated drinking water to consumers
Drinking Water Sources
Source water access is imperative to human survival. Sources may include groundwater from aquifers, surface water from rivers and streams and seawater through a desalination process. Direct or indirect water reuse is also growing in popularity in communities with limited access to sources of traditional surface or groundwater.
Source water scarcity is a growing concern as populations grow and move to warmer, less aqueous climates; climatic changes take place and industrial and agricultural processes compete with the public’s need for water. The scarcity of water supply and water conservation are major focuses of the American Water Works Association.
Drinking Water Treatment
Drinking Water Treatment involves the removal of pathogens and other contaminants from source water in order to make it safe for humans to consume. Treatment of public drinking water is mandated by the Environmental Protection Agency (EPA) in the U.S. Common examples of contaminants that need to be treated and removed from water before it is considered potable are microorganisms, disinfectants, disinfection byproducts, inorganic chemicals, organic chemicals and radionuclides.
There are a variety of technologies and processes that can be used for contaminant removal and the removal of pathogens to decontaminate or treat water in a drinking water treatment plant before the clean water is pumped into the water distribution system for consumption.
The first stage in treating drinking water is often called pretreatment and involves screens to remove large debris and objects from the water supply. Aeration can also be used in the pretreatment phase. By mixing air and water, unwanted gases and minerals are removed and the water improves in color, taste and odor.
The second stage in the drinking water treatment process involves coagulation and flocculation. A coagulating agent is added to the water which causes suspended particles to stick together into clumps of material called floc. In sedimentation basins, the heavier floc separates from the water supply and sinks to form sludge, allowing the less turbid water to continue through the process.
During the filtration stage, smaller particles not removed by flocculation are removed from the treated water by running the water through a series of filters. Filter media can include sand, granulated carbon or manufactured membranes. Filtration using reverse osmosis membranes is a critical component of removing salt particles where desalination is being used to treat brackish water or seawater into drinking water.
Following filtration, the water is disinfected to kill or disable any microbes or viruses that could make the consumer sick. The most traditional disinfection method for treating drinking water uses chlorine or chloramines. However, new drinking water disinfection methods are constantly coming to market. Two disinfection methods that have been gaining traction use ozone and ultra-violet (UV) light to disinfect the water supply.
Drinking Water Distribution
Drinking water distribution involves the management of flow of the treated water to the consumer. By some estimates, up to 30% of treated water fails to reach the consumer. This water, often called non-revenue water, escapes from the distribution system through leaks in pipelines and joints, and in extreme cases through water main breaks.
A public water authority manages drinking water distribution through a network of pipes, pumps and valves and monitors that flow using flow, level and pressure measurement sensors and equipment.
Water meters and metering systems such as automatic meter reading (AMR) and advanced metering infrastructure (AMI) allows a water utility to assess a consumer’s water use and charge them for the correct amount of water they have consumed.